基于摄影测量的岩体结构面数字识别及采场稳定性分级

采矿与安全工程学报 ›› 2014, Vol. 31 ›› Issue (1): 127-133.

基于摄影测量的岩体结构面数字识别及采场稳定性分级

1．东北大学资源与土木工程学院，辽宁沈阳 110819； 2．中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室，北京 100083； 3．山东黄金矿业股份有限公司，山东莱州 261400

出版日期:2014-01-15 发布日期:2014-02-26
作者简介:赵兴东(1975-)，男，辽宁省辽中县人，博士，教授，从事岩石失稳及其控制研究工作。 E-mail：zhaoxingdong@mail.neu.edu.cn Tel：024-83691093
基金资助:
国家自然科学基金项目(51174044)；国家自然科学基金青年基金项目(51004025)；辽宁省教育厅人才项目(LJQ2012024)；国家高技术研究发展计划(863)项目(2011AA060400)；深部岩土力学与地下工程国家重点实验室开放基金项目(SKLGDUEK1113)

Rockmass structural plane digital recognition and stope stability classification based on the photographic surveying method

Online:2014-01-15 Published:2014-02-26

摘要/Abstract

摘要： 采场岩体结构面的分布特征是评价采场及其围岩稳定的重要指标之一。为此，借助三维数字摄影测量系统(ShapeMetrix 3D)对新城金矿-630 m中段采场岩体进行现场原位节理扫描，获取采场岩体结构产状、节理组数、节理间距、结构面线密度等参数。在此基础上，结合地应力量测及岩石力学实验数据信息，采用巴顿岩体质量(Q)分类和岩体地质力学分类(RMR)方法对新城金矿的采场稳定性进行分级，并对2种分类方法的结果进行对比分析，得出新城金矿采场上盘、矿体以及下盘的岩体稳定等级为Ⅱ~Ⅲ级，采场总体稳定性均一般或者较差。该方法有效地对新城金矿采场稳定性进行分级，为合理选择采场结构参数及采场顶板支护形式提供可靠的基础数据。

关键词: 摄影测量, 岩体结构面, 采场稳定性, Q分类, RMR分类

Abstract: Stope rockmass structural plane distribution is one of the important indexes to evaluate the stability of stope and its surrounding rock mass. Therefore, in this paper, the 3-D digital measurement system (ShapeMetrix 3D) is employed to survey and collect the digital information of the parameters of rockmass structures plane that include rock mass occurrence, joint set number, joint spacing, liner density of structural plane etc of -630m stage stope at Xincheng Gold Mine. Based on the digital joint structure characteristics, the Q-system and RMR system are employed to analyze and classify the stability of stope rockmass, combining geostress measurement result and rock mechanics parameters. The stability of stopes is analyzed by using the Q-system and RMR-system. Assessments are conducted at the hanging wall, orebody and footwall of different stopes. By contrasting the assessing results of two kinds of rock mass rating system, the hanging wall and orebody have poor Q and RMR values, and the foot wall has fair conditions, which indicates the fair or poor stope stability. The stability analyzing method is very effective to assess the stope stability at Xincheng Gold Mine and it provides the reliable basic data for choosing the right stope structure parameters and roof supporting forms.

Key words: photographic surveying, rockmass structural plane, stope stability, Q system, RMR system

赵兴东, 刘杰, 张洪训, 由伟, 刘丰韬. 基于摄影测量的岩体结构面数字识别及采场稳定性分级[J]. 采矿与安全工程学报, 2014, 31(1): 127-133.

ZHAO Xing-dong, LIU Jie, ZHANG Hong-xun, YOU Wei, LIU Feng-tao. Rockmass structural plane digital recognition and stope stability classification based on the photographic surveying method[J]. Journal of Mining & Safety Engineering, 2014, 31(1): 127-133.